Can we use more than one null value for unique key?
Answer Posted / ravin
Yes we can..
Hey guys.. don't be confused with the values and nulls.
Unique key conforms only the values to be unique. Since the
nulls are not any kind of value, they can occur as many
times as they can.. nulls are nothing..
| Is This Answer Correct ? | 13 Yes | 2 No |
Post New Answer View All Answers
What will you get by the cursor attribute sql%rowcount?
What is compute?
What is a trigger word?
what is a composite key ? : Sql dba
what is column? : Sql dba
Can you do multiple joins in sql?
Does sql between include endpoints?
Explain aggregate functions are available there in sql?
Can function return multiple values in sql?
How is use pl and sql?
How much ram can sql express use?
What is the plv (pl/vision) package offers?
How can a function retun more than one value in oracle with proper example?
How do rank () and dense_rank () differ?
What is recursive stored procedure?